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Asia

Yan'an (959m)





Number of days available for climatic review

Parámetroenefebmarabrmayjun
Tmáx340306341329341330
Tmín341307341330341329
Duración del tiempo soleado000000
Precipitación938595109124120
Humedad/Visibilidad928492104123119


Parámetrojulagosepoctnovdic
Tmáx340338330334328338
Tmín341341330335329341
Duración del tiempo soleado000000
Precipitación126127120122120124
Humedad/Visibilidad122121118117118124


Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured.